Solid-liquid separation equipment for improving scaling of lime feeding pipeline and use method

Abstract

The invention discloses solid-liquid separation equipment for improving scaling of a lime adding pipeline and a using method, and relates to the technical field of solid-liquid separation, the solid-liquid separation equipment comprises a high-density sedimentation tank, a lime chemical box, a chemical dispensing pipe, a chemical inlet valve, a chemical adding pump, a chemical dispensing valve, a chemical outlet valve and a circulating cleaning mechanism, the medicine inlet valve is arranged at one end, close to the high-density sedimentation tank, of the medicine dispensing pipe; the dosing pump is arranged at one end, close to the lime medicine box, of the dispensing pipe dispensing valve; the medicine dispensing valve is arranged on the medicine dispensing pipe between the medicine inlet valve and the medicine adding pump, and the medicine outlet valve is arranged on the medicine dispensing pipe between the medicine adding pump and the lime medicine box; the output end of the circulating cleaning mechanism is used for being communicated with the medicine dispensing pipe between the medicine dispensing valve and the medicine inlet valve, the input end of the circulating cleaning mechanism is communicated with the medicine dispensing pipe between the medicine adding pump and the medicine outlet valve, the circulating cleaning mechanism can circularly supply hydrochloric acid cleaning liquid to clean the medicine dispensing pipe, the structure is simple, use is convenient, and the problem of pipeline scaling is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, and in particular to a solid-liquid separation device for improving scaling of a lime adding pipeline and a use method thereof. Background Art

[0002] High-density sedimentation tank is a kind of equipment used for solid-liquid separation. It uses the difference in specific gravity between solid particles and liquid to achieve solid-liquid separation through natural sedimentation. It is usually used to treat liquids containing a large amount of suspended solids, such as sewage, wastewater, industrial liquids, etc. It can effectively remove suspended solid particles, reduce the solid content in wastewater, and achieve the purpose of water purification. High-density sedimentation tanks usually have a large processing capacity and a small flow rate, which helps to improve the solid-liquid separation effect. At the same time, some sedimentation aids or additives (such as lime) are added according to actual needs to increase the efficiency of solid-liquid separation.

[0003] However, the chemical substances produced by the reaction of lime and water will continue to deposit on the pipe wall, causing pipe blockage. These blockage problems not only affect the normal operation of the system, but may also cause system failures, such as too low design flow rate, too high slurry concentration, imperfect flushing and emptying systems of pipes and tanks, etc. Therefore, when using lime for high-density sedimentation tank water treatment, special attention should be paid to preventing and dealing with pipe blockage problems. Summary of the invention

[0004] The purpose of the present invention is to provide a solid-liquid separation device and a method for using the device to improve the scaling of lime adding pipelines, so as to solve the problems existing in the above-mentioned prior art. The device has a simple structure, is easy to use, and can effectively solve the scaling problem of pipelines.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a solid-liquid separation device for improving scaling of lime dosing pipeline, comprising: a high-density sedimentation tank, a lime medicine box, a dispensing pipe, a medicine inlet valve, a dosing pump, a medicine dispensing valve, a medicine outlet valve and a circulation cleaning mechanism, one end of the dispensing pipe is connected with the top of the high-density sedimentation tank, and the other end is connected with the lime medicine box, the dispensing valve is arranged at one end of the dispensing pipe close to the high-density sedimentation tank; the dosing pump is arranged at one end of the dispensing pipe dispensing valve close to the lime medicine box; the dispensing valve is arranged on the dispensing pipe between the medicine inlet valve and the dosing pump, and the medicine outlet valve is arranged on the dispensing pipe between the dosing pump and the lime medicine box; the output end of the circulation cleaning mechanism is used to communicate with the dispensing pipe between the dispensing valve and the medicine inlet valve, the input end of the circulation cleaning mechanism is connected with the dispensing pipe between the dosing pump and the medicine outlet valve, and the circulation cleaning mechanism can circulate and supply hydrochloric acid cleaning solution to clean the dispensing pipe.

[0007] Preferably, the circulating cleaning mechanism includes a hydrochloric acid cleaning tank, a cleaning liquid output pipe, a cleaning liquid reflux pipe, a cleaning valve, a cleaning pump and a reflux valve. The hydrochloric acid cleaning tank is used to place hydrochloric acid cleaning liquid. One end of the cleaning liquid output pipe is connected to the hydrochloric acid cleaning tank, and the other end is connected to the dispensing pipe between the dispensing valve and the drug inlet valve. One end of the cleaning liquid reflux pipe is connected to the hydrochloric acid cleaning tank, and the other end is connected to the dispensing pipe between the drug adding pump and the drug outlet valve. The cleaning valve is arranged on the cleaning liquid output pipe, the cleaning pump is arranged on the cleaning liquid output pipe between the cleaning valve and the hydrochloric acid cleaning tank, and the reflux valve is arranged on the cleaning liquid reflux pipe.

[0008] Preferably, the circulation cleaning mechanism further includes a discharge pipe and a discharge valve, the discharge pipe is connected to the cleaning liquid reflux pipe, and the discharge valve is arranged on the discharge pipe.

[0009] Preferably, it also includes an aeration mechanism, the output end of which is connected to the dispensing pipe between the dispensing valve and the cleaning liquid output pipe and is capable of aeration.

[0010] Preferably, the aeration mechanism includes an air inlet pipe, a one-way valve and a pressure air source, one end of the air inlet pipe is connected to the pressure air source, and the other end is connected to the dispensing pipe between the dispensing valve and the cleaning liquid output pipe. The one-way valve is arranged on the air inlet pipe, and opening the pressure air source can aerate the dispensing pipe through the air inlet pipe.

[0011] Preferably, it also includes an emptying mechanism, which is connected to the dispensing pipe to discharge the lime reagent remaining in the dispensing pipeline.

[0012] The present invention also provides a method for using the solid-liquid separation device for improving scaling of lime dosing pipeline as described in any one of the above items, comprising the following steps:

[0013] Regularly check whether the dispensing pipe has reduced flow and / or abnormal pressure of the dosing pump, and determine whether the dispensing pipe is blocked;

[0014] When the dispensing tube is found to be blocked:

[0015] Close the medicine inlet valve, stop the operation of the medicine dosing pump, start the emptying mechanism to empty the lime reagent remaining in the medicine dispensing pipeline; close the medicine outlet valve;

[0016] Open the cleaning medicine pump, cleaning valve and reflux valve, close the discharge valve, and the hydrochloric acid cleaning liquid returns from the hydrochloric acid cleaning tank through the cleaning liquid output pipe, the medicine dispensing pipe and the cleaning liquid input pipe to the hydrochloric acid cleaning tank for cyclic cleaning;

[0017] At the same time, open the pressure gas source, use the air inlet pipe to aerate the dispensing pipe, and perform aeration cycle cleaning for 1 hour; after 1 hour of cleaning, close the cleaning pump and cleaning valve, open the discharge valve, and discharge the cleaning waste liquid in the dispensing pipe.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The present invention provides a solid-liquid separation device for improving scaling of lime dosing pipeline and a method for using the device. When scaling occurs in the lime dosing pipeline, a circulating cleaning mechanism can be used to provide hydrochloric acid cleaning liquid to clean the dispensing pipe, thereby effectively solving the scaling problem in the pipeline and ensuring smooth lime dosing, thereby ensuring that the solid-liquid separation effect of the high-density sedimentation tank is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the solid-liquid separation device for improving scaling of lime adding pipeline according to the present invention;

[0022] In the figure: 1. High-density sedimentation tank; 2. Lime medicine box; 3. Dispensing pipe; 4. Inlet valve; 5. Dosing pump; 6. Dispensing valve; 7. Discharge valve; 8. Hydrochloric acid cleaning tank; 9. Cleaning liquid output pipe; 10. Cleaning liquid reflux pipe; 11. Cleaning valve; 12. Cleaning pump; 13. Reflux valve; 14. Discharge pipe; 15. Discharge valve; 16. Inlet pipe; 17. Check valve; 18. Pressure gas source. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a solid-liquid separation device and a method for using the device to improve the scaling of lime adding pipelines, so as to solve the problems existing in the above-mentioned prior art. The device has a simple structure, is easy to use, and can effectively solve the scaling problem of pipelines.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment 1

[0027] This embodiment provides a device for improving the solid-liquid separation of lime dosing pipeline scaling, such as Figure 1 As shown, it includes: a high-density sedimentation tank 1, a lime medicine box 2, a dispensing pipe 3, a medicine inlet valve 4, a dosing pump 5, a dispensing valve 6, a medicine outlet valve 7 and a circulation cleaning mechanism. One end of the dispensing pipe 3 is connected to the top of the high-density sedimentation tank 1, and the other end is connected to the lime medicine box 2. The medicine inlet valve 4 is arranged at one end of the dispensing pipe 3 close to the high-density sedimentation tank 1; the dosing pump 5 is arranged at one end of the dispensing pipe 3 dispensing valve 6 close to the lime medicine box 2; the dispensing valve 6 is arranged on the dispensing pipe 3 between the medicine inlet valve 4 and the dosing pump 5, and the medicine outlet valve 7 is arranged on the dispensing pipe 3 between the dosing pump 5 and the lime medicine box 2. On the pipe 3; the output end of the circulation cleaning mechanism is used to communicate with the dispensing pipe 3 between the dispensing valve 6 and the medicine inlet valve 4, and the input end of the circulation cleaning mechanism is connected to the dispensing pipe 3 between the dosing pump 5 and the medicine outlet valve 7. The circulation cleaning mechanism can circulate the supply of hydrochloric acid cleaning liquid to clean the dispensing pipe 3. When scaling problems occur in the lime adding pipeline, the circulation cleaning mechanism can be used to provide hydrochloric acid cleaning liquid to clean the dispensing pipe 3, effectively solving the scaling problem of the pipeline and ensuring smooth lime addition, thereby ensuring that the solid-liquid separation effect of the high-density sedimentation tank 1 is not affected.

[0028] In a preferred solution of the present embodiment, the circulation cleaning mechanism includes a hydrochloric acid cleaning tank 8, a cleaning liquid output pipe 9, a cleaning liquid reflux pipe 10, a cleaning valve 11, a cleaning pump 12 and a reflux valve 13. The hydrochloric acid cleaning tank 8 is used to place the hydrochloric acid cleaning liquid. One end of the cleaning liquid output pipe 9 is connected to the hydrochloric acid cleaning tank 8, and the other end is connected to the dispensing pipe 3 between the dispensing valve 6 and the drug inlet valve 4. One end of the cleaning liquid reflux pipe 10 is connected to the hydrochloric acid cleaning tank 8, and the other end is connected to the dispensing pipe 3 between the dosing pump 5 and the drug outlet valve 7. The cleaning valve 11 is arranged on the cleaning liquid output pipe 9, the cleaning pump 12 is arranged on the cleaning liquid output pipe 9 between the cleaning valve 11 and the hydrochloric acid cleaning tank 8, and the reflux valve 13 is arranged on the cleaning liquid reflux pipe 10, which can ensure that the hydrochloric acid cleaning liquid enters the dispensing pipe 3 through the cleaning liquid output pipe 9 under the action of the cleaning pump 12 for cleaning, and then returns to the hydrochloric acid cleaning tank 8 through the cleaning liquid reflux pipe 10, forming an effective circulation cleaning system to improve the cleaning efficiency and effect.

[0029] In a preferred solution of the present embodiment, the circulating cleaning mechanism also includes a discharge pipe 14 and a discharge valve 15. The discharge pipe 14 is connected to the cleaning liquid reflux pipe 10, and the discharge valve 15 is arranged on the discharge pipe 14. After adding the discharge pipe 14 and the discharge valve 15, the cleaning waste liquid can be conveniently discharged after the cleaning is completed, thereby avoiding the waste liquid from causing adverse effects on subsequent cleaning or pipeline operation, thereby ensuring the normal operation of the equipment and the continuity of the cleaning effect.

[0030] In a preferred scheme of the present embodiment, the solid-liquid separation device for improving the scaling of the lime dosing pipeline also includes an aeration mechanism, the output end of the aeration mechanism is connected to the dispensing pipe 3 between the dispensing valve 6 and the cleaning liquid output pipe 9 and can be aerated. The aeration mechanism can increase the gas stirring effect during the cleaning process, so that the hydrochloric acid cleaning liquid is in full contact with the scaling on the inner wall of the pipeline, thereby improving the cleaning effect, and also helps to prevent the rapid formation of scaling during daily operation.

[0031] In a preferred solution of the present embodiment, the aeration mechanism includes an air inlet pipe 16, a one-way valve 17 and a pressure air source 18. One end of the air inlet pipe 16 is connected to the pressure air source 18, and the other end is connected to the dispensing pipe 3 between the dispensing valve 6 and the cleaning liquid output pipe 9. The one-way valve 17 is arranged on the air inlet pipe 16. When the pressure air source 18 is opened, aeration can be carried out into the dispensing pipe 3 through the air inlet pipe 16. The combined design of the air inlet pipe 16, the one-way valve 17 and the pressure air source 18 ensures stable aeration. The one-way valve 17 can prevent the cleaning liquid or other substances from flowing back into the pressure air source 18, thereby ensuring the safe and stable operation of the pressure air source 18, thereby improving the reliability of the entire aeration mechanism.

[0032] In a preferred scheme of the present embodiment, the solid-liquid separation device for improving the scaling of the lime addition pipeline also includes an emptying mechanism, and the emptying structure is connected to the dispensing pipe 3 to discharge the residual lime agent in the dispensing pipe 3. Adding the emptying mechanism can discharge the residual lime agent in the dispensing pipe 3 before cleaning, thereby avoiding unnecessary reaction between the lime agent and the hydrochloric acid cleaning solution, affecting the cleaning effect, and also reducing the further corrosion and scaling of the pipeline by the residual lime agent.

[0033] Embodiment 2

[0034] This embodiment also provides a method for using the solid-liquid separation device for improving scaling of the lime dosing pipeline as in the first embodiment, comprising the following steps:

[0035] Regularly check whether the dispensing pipe 3 has a reduced flow rate and / or abnormal pressure of the dosing pump 5, and determine whether the dispensing pipe 3 is blocked; by regularly checking the flow rate of the dispensing pipe 3 and the pressure of the dosing pump 5, potential problems of pipeline blockage can be discovered in time, so that early detection and early treatment can be achieved to avoid further deterioration of the blockage problem and affect the normal operation of the high-density sedimentation tank 1. The stability and reliability of equipment operation are improved, and system failures and maintenance costs caused by blockage are reduced.

[0036] When the dispensing pipe 3 is found to be blocked:

[0037] Close the medicine inlet valve 4, stop the operation of the dosing pump 5, start the emptying mechanism to empty the residual lime agent in the dispensing pipe 3; close the medicine outlet valve 7; stop the supply of lime agent and the operation of the dosing pump 5 in time to prevent more lime agent from entering the already blocked pipeline and avoid aggravating the blockage. Emptying the residual lime agent can prepare for subsequent cleaning operations, avoid adverse reactions between the lime agent and the cleaning solution, and also reduce further corrosion and scaling of the pipeline by the residual lime agent. Closing the medicine outlet valve 7 can prevent the cleaning solution from flowing into the area that does not need to be cleaned, ensuring that the cleaning solution is effectively cleaned within a specific pipeline range.

[0038] Open the cleaning pump, cleaning valve 11 and reflux valve 13, close the discharge valve 15, and the hydrochloric acid cleaning liquid returns from the hydrochloric acid cleaning tank 8 through the cleaning liquid output pipe 9, the dispensing pipe 3 and the cleaning liquid input pipe to the hydrochloric acid cleaning tank 8 for circulated cleaning. Open the cleaning pump, cleaning valve 11 and reflux valve 13 to allow the hydrochloric acid cleaning liquid to circulate in the dispensing pipe 3 to ensure that the cleaning liquid can fully contact the scale on the inner wall of the pipeline to improve the cleaning effect. Circular cleaning can continuously remove dissolved scale, accelerate the cleaning process, and improve cleaning efficiency;

[0039] At the same time, the pressure gas source 18 is turned on, and the air inlet pipe 16 is used to aerate the dispensing pipe 3, and an aeration cycle cleaning is performed for 1 hour. Aeration can increase the oxygen content in the cleaning liquid, promote chemical reactions, and improve the ability of the hydrochloric acid cleaning liquid to dissolve scale. At the same time, the bubbles generated by aeration can impact and stir the inner wall of the pipeline, making it easier for the cleaning liquid to dissolve and remove the scale. The 1-hour aeration cycle cleaning can ensure that the cleaning effect is sufficient and the scale in the pipeline is completely removed; after cleaning for 1 hour, the cleaning medicine pump and the cleaning valve 11 are closed, and the discharge valve 15 is opened to discharge the cleaning waste liquid in the dispensing pipe 3. After the cleaning is completed, the cleaning medicine pump and the cleaning valve 11 are closed in time to avoid the waste of cleaning liquid and pollution to the environment. Opening the discharge valve 15 to discharge the cleaning waste liquid can prepare for the next cleaning or normal operation, and ensure that there is no residual cleaning waste liquid in the pipeline to affect the addition of lime reagents and the solid-liquid separation effect of the high-density sedimentation tank 1.

[0040] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for improving solid-liquid separation of lime dosing pipeline scaling, characterized in that: include: High density sedimentation tank, Lime medicine box, a dispensing pipe, one end of which is connected to the top of the high-density sedimentation tank, and the other end of which is connected to the lime medicine box, A medicine inlet valve, the medicine inlet valve is arranged at one end of the medicine dispensing pipe close to the high-density sedimentation tank; A dosing pump, the dosing pump is arranged at one end of the dispensing valve of the dispensing pipe close to the lime medicine box; a medicine dispensing valve, the medicine dispensing valve being arranged on the medicine dispensing pipe between the medicine inlet valve and the medicine adding pump, A medicine dispensing valve, which is arranged on the medicine dispensing pipe between the medicine dosing pump and the lime medicine box; as well as A circulating cleaning mechanism, wherein the output end of the circulating cleaning mechanism is used to communicate with the dispensing pipe between the dispensing valve and the medicine inlet valve, and the input end of the circulating cleaning mechanism is connected to the dispensing pipe between the dosing pump and the medicine outlet valve. The circulating cleaning mechanism can circulate the supply of hydrochloric acid cleaning solution to clean the dispensing pipe.

2. The solid-liquid separation device for improving scaling of lime adding pipeline according to claim 1, characterized in that: The circulating cleaning mechanism includes a hydrochloric acid cleaning tank, a cleaning liquid output pipe, a cleaning liquid reflux pipe, a cleaning valve, a cleaning pump and a reflux valve. The hydrochloric acid cleaning tank is used to place hydrochloric acid cleaning liquid. One end of the cleaning liquid output pipe is connected to the hydrochloric acid cleaning tank, and the other end is connected to the dispensing pipe between the dispensing valve and the drug inlet valve. One end of the cleaning liquid reflux pipe is connected to the hydrochloric acid cleaning tank, and the other end is connected to the dispensing pipe between the dosing pump and the drug outlet valve. The cleaning valve is arranged on the cleaning liquid output pipe, the cleaning pump is arranged on the cleaning liquid output pipe between the cleaning valve and the hydrochloric acid cleaning tank, and the reflux valve is arranged on the cleaning liquid reflux pipe.

3. The solid-liquid separation device for improving scaling of lime adding pipeline according to claim 2, characterized in that: The circulation cleaning mechanism further comprises a discharge pipe and a discharge valve. The discharge pipe is communicated with the cleaning liquid reflux pipe, and the discharge valve is arranged on the discharge pipe.

4. The solid-liquid separation device for improving scaling of lime adding pipeline according to claim 3, characterized in that: It also includes an aeration mechanism, the output end of which is connected to the dispensing pipe between the dispensing valve and the cleaning liquid output pipe and can be aerated.

5. The solid-liquid separation device for improving scaling of lime adding pipeline according to claim 4, characterized in that: The aeration mechanism includes an air inlet pipe, a one-way valve and a pressure air source. One end of the air inlet pipe is connected to the pressure air source, and the other end is connected to the dispensing pipe between the dispensing valve and the cleaning liquid output pipe. The one-way valve is arranged on the air inlet pipe. When the pressure air source is opened, air can be aerated into the dispensing pipe through the air inlet pipe.

6. The solid-liquid separation device for improving scaling of lime adding pipeline according to claim 5, characterized in that: It also includes an emptying mechanism, which is connected to the dispensing pipe to discharge the lime reagent remaining in the dispensing pipeline.

7. A method for using the solid-liquid separation device for improving scaling of lime dosing pipelines as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Regularly check whether the dispensing pipe has reduced flow and / or abnormal pressure of the dosing pump, and determine whether the dispensing pipe is blocked; When the dispensing tube is found to be blocked: Close the medicine inlet valve, stop the operation of the medicine dosing pump, start the emptying mechanism to empty the lime reagent remaining in the medicine dispensing pipeline; close the medicine outlet valve; Open the cleaning pump, cleaning valve and reflux valve, close the discharge valve, and the hydrochloric acid cleaning liquid returns from the hydrochloric acid cleaning tank through the cleaning liquid output pipe, the dispensing pipe and the cleaning liquid input pipe to the hydrochloric acid cleaning tank for cyclic cleaning; At the same time, open the pressure gas source, use the air inlet pipe to aerate the dispensing pipe, and perform aeration cycle cleaning for 1 hour; after 1 hour of cleaning, close the cleaning pump and cleaning valve, open the discharge valve, and discharge the cleaning waste liquid in the dispensing pipe.

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